In openerp first override the orm model and add fields field_view_get in orm model then return the Dictionary of Fields, arch and toolbar in orm model.
you can use this function as given below.

def fields_view_get(self, cr, user, view_id=None, view_type='form', context=None,\
                         toolbar=False, submenu=False):

        res = {}
        res = super(board_board, self).fields_view_get(cr, user, view_id, view_type,\
                                 context, toolbar=toolbar, submenu=submenu)

        vids = self.pool.get('ir.ui.view.custom').search(cr, user,\
                     [('user_id', '=', user), ('ref_id' ,'=', view_id)])
        if vids:
            view_id = vids[0]
            arch = self.pool.get('ir.ui.view.custom').browse(cr, user, view_id, context=context)
            res['custom_view_id'] = view_id
            res['arch'] = arch.arch
        res['arch'] = self._arch_preprocessing(cr, user, res['arch'], context=context)
        res['toolbar'] = {'print': [], 'action': [], 'relate': []}
        return res